I usae a canon 40D witrh a standard trex 600E, works great.

Seems to me that ALL heli's beat the air into submission

We started with the Nikon D70s with our 600 and shifted to Nikon D40x because it's lighter and fits better in our Askman mounts. Lifting is no problem, haven't tried to auto down though. Just bought a Panasonic LX3 for use with smaller airships. It should beat the G10 in aerial shots due to better aperture value (2.0) and lower noise.